在模式识别当中，MFA出现小样本问题。为解决这个问题。我们提出了PCA+MFA的方法。首先对其进行PCA预处理，然后在用MFA降维。-Small sample problems in pattern recognition, MFA. To solve this problem. We put forward the PCA+ MFA method. On the PCA pretreatment first, and then with MFA dimension reduction.